Timeline for Why is the rotation period of regular moons in sync with the orbit period? What is the evidentiary support for tidal lock?
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| Oct 17 at 20:07 | comment | added | Tony Anderson | The interacting orbits of Io, Jupiter, Ganymede, and Europa are not relevant to the question, which asks essentially whether moons were formed asynchronous, and then got tidal locked or formed already in synchrony, and why. There are several published theories about the formation of moons including ours. Some require that the moons were formed in synchronous rotation naturally. Therefore, there is no need for a tidal lock (none involves magic as you question in one of your comments). This is consistent with Garcia’s answer because it implies that the Moon was formed in synchrony. See his ref. | |
| Oct 5 at 9:31 | history | answered | David Hammen | CC BY-SA 4.0 |